Improvement in shoes for wagon-brakes



l. GBIMSTE. Shoes for Wagon-Brak Patented May 25,1875.

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UNITED STATES PATENT OFFICE.

JOHN GRIMSTE, OF MILTON, CALIFORNIA.

IMPROVEMENT IN SHOES FOR WAGON-BRAKES.

Specification forming part of Letters Patent No. 163,650, dated May 25,1875; application filed March 17, 1875.

To all whom it may concern:

Be it known that 1, JOHN GRIMSTE, of Milton, Oalaveras county, State ofCalifornia, have invented an Improved Wagon-Brake; and 1 do herebydeclare the following descrip-' tion and accompanying drawings aresufficient to enable any person skilled in the art or science to whichit most nearly appertains to make and use my said invention orimprovement, without further invention or experiment.

My invention relates to an improved device for holding the shoe of awagon-brake so that it can be readily attached to or detached from thebrake-bar or adjusted upon it without cutting or otherwise weakening thebar.

Referring to the accompanying drawings, in which Figure l is aperspective view of my brake. Fig. 2 is a plan view with a portionbroken away.

A is the brake bar or beam, to the ends of which the brake-shoes areattached.

By my invention, 1 first attach the brakeshoe B to a three-sided box, 0,said box bein g of the proper size to slip on over the brakebar andcover its upper edge andtwo sides while the lower edge of the bar isexposed. The sides of the box 0 extend below the lower edge of thebrake-bar, and to secure the box to the bar, I make a transverse groove,d, across the lower edge of the bar near each end of the box, and in thelower edge of the sides of the box I make a hole, 0, opposite thegrooves, so that a pin or bolt, f, can be passed through the holes 6 andlie in the groove d, thus confining the box in place.

Two or more pairs of holes, 6 6, can be made in the opposite sides ofthe box, so that the position of the shoe can be shifted by moving thebox upon the bar so as to bring either pair of holes opposite thegroove.

This shifting of the shoe is necessary when the wheel becomes dished, asit always does in winter-time, and my device permits me to shift itreadily at any time, without trouble.

This arrangement for attaching brake-shoes to brake-barsis quite simpleand obviates the mutilation and weakening of the brake-bar, while itpermits the adjustment of the brakeshoe to the varying conditions of thewheel.

The shoe E can be attached to the box 0 by any convenient device, but Iprefer to attach it by means of a fixed jaw, L, a movable jaw, M, and ascrew 0.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-- The combination of brake-bar A, having grooves01, three-sided box 0 having holes 00, brakeshoe B, and bolts ff,substantially as and for the purpose set forth.

In witness whereof I hereunto set my hand and seal.

JOHN GRIMSTE. LL.

Witnesses:

A. D. Fox, J. G. POLLARD.

